The goal is to ensure quality for a period of time after you buy it. That can be several days to several weeks, depending on the item. For instance, milk, assuming proper refrigeration, should last five to seven days past its sell-by date before turning sour.
An autoencoder is a neural network that is trained in an unsupervised fashion. The goal of an autoencoder is to find a more compact representation of the data by learning an encoder, which transforms the data to their corresponding compact representation, and a decoder, which reconstructs the original data.
Incremental optical encoders are the simplest and most commonly used. The encoder provides information about the instantaneous position of a rotating shaft by producing one square wave cycle per increment of shaft movement.ncremental optical encoders are the simplest and most commonly used. The encoder provides information about the instantaneous position of a rotating shaft by producing one square wave cycle per increment of shaft movement.